This ceramic exhibited protonic conduction in moist N atmospheres at temperatures of between 500 and 1000C. Samples which contained an Yb mole fraction of 0.10 were investigated by using alternating-current and direct-current electrochemical techniques. The conductivities were of the order of 0.0002S/cm at 750C. These were lower than those of the analogous cerates. Within the present temperature range, the direct-current conductivity was lower, by a temperature-independent factor of about 2, than the corresponding alternating-current conductivity.

R.C.T.Slade, S.D.Flint, N.Singh: Solid State Ionics, 1995, 82[3-4], 135-41